
Turtle Sub Undersea Chase
The Turtle Sub Undersea Chase pits the Turtles against a rival vessel in an underwater confrontation from the LEGO® Teenage Mutant Ninja Turtles range. Released in 2014, the 684-piece set is built around two opposing vehicles, and five minifigures are included.
- Set number
- 79121
- Year
- 2014
- Pieces
- 684
- Minifigures
- 5
- Different parts
- 215
Parts list 215
-
Plate Round 1 × 1 with Solid Stud
× 20
-
Plate 1 × 2
× 18
-
Plate 1 × 2
× 17
-
Brick 1 × 2
× 15
-
Plate 2 × 4
× 14
-
Tile Special 1 × 2 Grille with Bottom Groove
× 11
-
Plate 1 × 2
× 11
-
Plate Round 2 × 2 with Rounded Bottom [Boat Stud]
× 10
-
Plate 1 × 4
× 10
-
Plate Round 1 × 1 with Solid Stud
× 10
-
Brick Curved 4 × 1 Double with No Studs
No longer produced · last seen 2016
× 9
-
Plate 2 × 2 Corner
× 8
-
Plate 1 × 4
× 8
-
Brick Arch 1 × 3 × 2 Curved Top
No longer produced · last seen 2024
× 8
-
Brick Wedged, Curved Triple 4 × 4 × 2/3 with 2 Studs
No longer produced · last seen 2015
× 8
-
Plate Special 1 × 1 with Clip Vertical [Thick Open O Clip]
× 8
-
Brick Round Corner 2 × 2 Macaroni with Stud Notch and Reinforced Underside [New Style]
× 8
-
Brick Sloped 30° 1 × 2 × 2/3
× 8
-
Technic Pin with Friction Ridges Lengthwise and Center Slots
No longer produced · last seen 2021
× 7
-
Technic Brick 1 × 4 [3 Pin Holes]
× 7
-
Brick Special 1 × 2 with Pin
No longer produced · last seen 2021
× 6
-
Plate 2 × 3
× 6
-
Plate Round 1 × 1 with Solid Stud
× 6
-
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots
No longer produced · last seen 2021
× 6
-
Brick Special 1 × 2 Palisade [aka Log]
× 6
-
Plate Special 1 × 2 [Side Handle Closed Ends]
× 6
-
Brick Special 1 × 1 with Stud on 1 Side
× 6
-
Brick Curved 4 × 1 Double with No Studs
× 6
-
Brick 1 × 6
× 5
-
Plate 2 × 3
× 5
-
Plate 1 × 2
× 5
-
Technic Axle Pin without Friction Ridges Lengthwise
× 5
-
Plate Special 1 × 4 with 2 Studs, 3 Bottom Tubes
No longer produced · last seen 2021
× 5
-
Brick 2 × 2 Corner
× 4
-
Tile Special 1 × 2 Grille with Bottom Groove
× 4
-
Tile 1 × 4 with Groove
× 4
-
Plate Special 1 × 2 Side Handle [Free Ends]
× 4
-
Brick Special 1 × 2 with Grille
× 4
-
Brick 2 × 2
× 4
-
Brick 1 × 2
× 4
-
Plate 1 × 2
× 4
-
Plate 2 × 8
× 4
-
Brick Sloped 45° 2 × 2
× 4
-
Brick Sloped 45° 2 × 1 with Bottom Pin
× 4
-
Technic Bush
× 4
-
Technic Brick 1 × 6 [5 Pin Holes]
× 4
-
Tile 1 × 8 with Groove
× 4
-
Technic Axle 3
× 4
-
Panel 1 × 2 × 1 [Rounded Corners]
× 4
-
Brick Special 1 × 1 with Clip Vertical [Thick U Clip, Solid Stud]
No longer produced · last seen 2014
× 4
-
Brick Curved 1 × 2 × 1 1/3 with Curved Top
× 4
-
Plate Special 2 × 2 with 1 Pin Hole [Complete Underside Rib]
× 4
-
Plate Special 2 × 2 with 1 Pin Hole [Complete Underside Rib]
× 4
-
Brick Curved 2 × 1 No Studs [1/2 Bow]
× 4
-
Wheel 11 × 8 with Center Groove
× 4
-
Brick Curved 2 × 2 × 2/3 Two Studs and Curved Slope End
× 4
-
Cone 1 × 1 [Top Groove]
× 4
-
Plate 1 × 12
× 4
-
Tile 2 × 4 with Groove
× 4
-
Tile 2 × 4 with Groove
× 4
No part matches this colour selection.
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Minifigures 5
Description
Two vehicles, one chase
At the centre of the set are two contrasting vehicles: a Turtle-themed submarine and a rival craft, together recreating an underwater chase straight out of the box. With 684 pieces and 215 unique parts, there's enough substance to give both models their own distinct character rather than building one oversized vehicle. That split means the set is ready for chase scenes immediately, without needing extra vehicles from other sets.
Grey with a reddish-brown contrast
Light bluish grey and dark bluish grey form the technical base of both vehicles, while reddish brown adds a warmer accent and black handles detail on weapons and thrusters. That mix of cool greys and warmer accents gives the vehicles a distinctly mechanical but not sterile look. The parts list on this page shows exactly which pieces come in reddish brown, useful for anyone after that colour for their own submarine or vehicle builds.
Five minifigures, two sides
Five minifigures come with the set, split between the Turtles and their opponents, so both vehicles can be crewed straight away. That makes the Undersea Chase a set built for confrontation from the start, rather than a single vehicle meant purely for display. For fans of the series, the combination of familiar characters and an unusual underwater setting is part of the appeal. The set also pairs well with other Turtles vehicles, for anyone building a wider collection.
Where it sits by size
At 684 pieces, the set sits in the middle ground between small single-vehicle sets and the larger base sets in the range. The 215 unique parts help both vehicles feel distinct despite sharing a similar piece count. The full parts list on this page is useful for looking up individual elements or gathering pieces for other vehicle builds. For fans after two vehicles rather than just one, this set offers a good balance of piece count and play value.
FAQ
- How many pieces does the Turtle Sub Undersea Chase 79121 have?
- The set contains 684 pieces, including 215 unique parts.
- How many minifigures are included?
- Five minifigures are split between the Turtles and their opponents.
- When was this set released?
- The Turtle Sub Undersea Chase 79121 came out in 2014.



